DocM 13,392

The test stand at their McGregor Texas facility is nearing completion, and the 3 cores (center core and 2 liquid fueled boosters, all based on Falcon 9R) are under construction at Hawthorne, California.

Falcon Heavy will be the most powerful rocket on Earth, capable of sending 53,000 kg to low Earth orbit, 21,200 kg to geostationary orbit, or 13,200 kg to Mars.

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DocM 13,392

BFR probably won't be tested at McGregor because the diameter of the core precludes road or rail shipment. Their statements indicate the BFR factory, test area, crew training and launch complex will be one large facility.

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+FloatingFatMan 14,102

+FloatingFatMan 14,102

BFR probably won't be tested at McGregor because the diameter of the core precludes road or rail shipment. Their statements indicate the BFR factory, test area, crew training and launch complex will be one large facility.

But will they STILL have to warn the people at McGregor, that's the question!

SpaceX began erecting a new hangar at a former space shuttle launch pad in Florida last week, moving the historic facility closer to launching astronauts again.

Positioned at the south perimeter of launch pad 39A, the hangar sits on the gravel crawlerway used to transport Saturn 5 moon rockets and space shuttles from the nearby Vehicle Assembly building to the launch pad.

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DocM 13,392

Yup, and it appears the delay driver was getting F9 Full Thrust and stage landings sorted out. No they just need to put the final touches on LC-39A, and to that the rotating service structure demolition has started.

When Falcon Heavy lifts off later this year, it will be the most powerful operational rocket in the world by a factor of two. With the ability to lift into orbit over 54 metric tons (119,000 lb)--a mass equivalent to a 737 jetliner loaded with passengers, crew, luggage and fuel--Falcon Heavy can lift more than twice the payload of the next closest operational vehicle, the Delta IV Heavy, at one-third the cost.

Falcon Heavy draws upon the proven heritage and reliability of Falcon 9. Its first stage is composed of three Falcon 9 nine-engine cores whose 27 Merlin engines together generate more than 5 million pounds of thrust at liftoff, equal to approximately eighteen 747 aircraft. Only the Saturn V moon rocket, last flown in 1973, delivered more payload to orbit. Falcon Heavy was designed from the outset to carry humans into space and restores the possibility of flying missions with crew to the Moon or Mars.

As SpaceX engineers put together the first model of the company’s new Falcon Heavy rocket, officials have not ruled out flying a paying customer’s satellite aboard the maiden flight of the humongous launcher scheduled later this year, the company’s president told Spaceflight Now.

The long-awaited Falcon Heavy rocket could blast off on its first flight as soon as November from launch pad 39A at NASA’s Kennedy Space Center in Florida, returning the storied Apollo- and shuttle-era launch complex to service for the first time since the last space shuttle mission took off in 2011.

The destination and passenger for the Falcon Heavy’s first flight remains undecided, said Gwynne Shotwell, SpaceX’s president and chief operating officer.

“There have been a number of customers interested in flying on that (mission),” Shotwell said in an interview with Spaceflight Now. “We’re trying to balance, does it make sense for this to just be our mission, so we own it completely?”

SpaceX officials have previously said the first launch of the Falcon Heavy will be strictly a test flight, but Shotwell said the company’s growing customer base has signaled a desire to fly a satellite on the mission.

She said SpaceX will make the first Falcon Heavy launch “useful” by proving its capabilities to future customers, such as heaving a hefty payload to geostationary transfer orbit, the targeted drop-off orbit for communications satellites heading for stations 22,300 miles (nearly 36,000 kilometers) over the equator.

“Regardless of whether we fly a customer or a purely demonstration mission, we’ll make that mission useful, whether it’s to demonstrate something for a GTO (geostationary transfer orbit) capability for our commercial customers, or whether it’s to demonstrate some requirement for national security space,” Shotwell said.

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DocM 13,392

Crossfeed was shelved until someone needs it, and with the possibility of the USAF funded methane fueled Raptor upper stage for F9 and FH that could be never. The Raptor S2 could push FH into the 70-80 tonne range.

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DocM 13,392

Someone at NASA once calculated that if Saturn V exploded shortly after liftoff (similar to the 2014 Antares explosion) the fireball would be 1,400 feet in diameter and the blast equivalent to a 2-3 kiloton tactical nuke.

A BFR blowing up would be significantly larger, so it's launch sites will have to have a safety zone several to ten miles in diameter, or it'll have to launch from an offshore platform or island.

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Unobscured Vision 2,263

Unobscured Vision 2,263

Someone at NASA once calculated that if Saturn V exploded shortly after liftoff (similar to the 2014 Antares explosion) the fireball would be 1,400 feet in diameter and the blast equivalent to a 2-3 kiloton tactical nuke.

A BFR blowing up would be significantly larger, so it's launch sites will have to have a safety zone several to ten miles in diameter, or it'll have to launch from an offshore platform or island.

BFR fireballing at < 2km would be death. Preferably (and there's no "preferable" scenario here, just to be clear) we'd want BFR "feet wet" and 13~15km up. An S1 failure of some kind that there's some warning about (5~10 seconds) so that there's some time to react and perform a Launch Abort before things really get bad (although the further away the crew is, the better it'll be on them, as we'll see why in a sec) is better then simply "it just went up, holy [expletive]".

Crew survivability is gonna depend on how far away we can get them from the S1 before this monstrosity goes nuclear. It's still headed uphill, so if we can get the crew 45-90 degrees off-relative-position using the LES and distance them from whatever happens next that's a good thing. They're gonna get tossed around and beat up a little -- that's what the safety harnesses and seats are designed to mitigate, as much as possible. If something like this had happened on Apollo/Saturn (and NASA has already said this in the past) there really was no saving the Crew -- and SpaceX finds that unacceptable; so they've been working from day one from a standpoint of safety.

So the LES/LAS has been tripped, the Crew Module has removed itself from the now-doomed and still-ascending BFR with extreme haste, taking it on a parabolic arc away from the bad stuff. Is it far enough away?

The doomed S1 gives up the ghost, and goes critical; and one of the more powerful non-Nuclear explosions in the past 60 years occurs. Without exact figures of fuel remaining, weight of the vehicle, speed, altitude and direction of travel it's impossible to give an exact number regarding how powerful that explosion would be, but it's going to be 9~12 kilotons. How much of that energy reaches the Crew Module will largely depend on distance; but the decay of energy is going to be pretty much the same as any other mid-altitude explosion and based upon the same factors: Initial Energy (small letter I), time (t) squared, distance (d), velocity and angle of the Crew Module as it is travelling away from the IP (which will offset some of the acoustic energy by 25~55% at the maximum).

(And yes, I'm getting decent at Math. )

So, plainly put, I'd be quite concerned about people on the ground witnessing something like this and being too close. A good rule of thumb (for those who didn't have the benefit of Military Training) is for every potential Kiloton of energy something can crank out, one should put two kilometers (1.4 miles, roughly) of distance between themselves and it to also account for any acoustical energy.